User Guide

Document feeder simplex operation (M525c model)
Following is the basic sequence of operation for a document feeder simplex job.
Document feeder simplex operation (M525c model)
1. ADF jam cover sensor cover door detects when cover door is in closed position.
2. The ADF paper present sensor activates when paper is loaded onto the input tray.
3. The pick motor rotates to lower the pick roller and starts to pick the loaded paper.
4. The ADF multi pick (ultra sonic) sensor activates when the leading edge of the media is driven past
the sensor. The product firmware registers a successful pick operation.
5. The ADF paper path deskew activates when the leading edge of the paper passes it. The product
firmware registers the leading edge of the paper position.
6. The leading edge of the paper is driven into the nip point of the deskew drive roller and the
deskew pinch rollers. A buckle of paper is created by the nip point for pick-skew correction.
7. The deskew motor rotates the deskew drive roller to pull the paper into the prescan drive roller.
8. The pick motor stops turning and allows both the pick and feed roller to turn freely while the paper
is being pulled in by the deskew drive roller.
9. The feed motor rotates to drive the paper into the prescan frontside sensor. The firmware registers
the leading edge position of the paper as the multi-pick sensor is activated.
NOTE: If the copy job requires a reflective platen change, the frontside background selector is
activated.
10. The feed motor continues to rotate and drive the leading edge of the paper through the preset
distance from the multi-pick sensor to the frontside scan zone. The scanner begins the scanning
and data retrieval process.
11. The ADF multi pick (ultra sonic) sensor deactivates when trailing edge of the paper passes the
sensor. The firmware registers the trailing edge of the paper position.
12. The feed motor continues to rotate and drive the trailing edge of the paper through the preset
distance from the ADF multi pick (ultra sonic) sensor to the frontside scan zone. The scanner ends
the scanning and data retrieval process.
13. The feed motor continues to rotate and ejects the trailing edge of the paper into the output bin.
14. One of the following occurs:
◦
If the copy job is complete, the ADF paper present sensor is deactivated. The feed motor
reverses rotation to raise the pick roller.
◦
If the copy job is not complete, the ADF paper present sensor is active. The product firmware
detects additional pages in the input tray and the process repeats.
56 Chapter 1 Theory of operation ENWW